Hi, I've been suffering from Labrynthitis for the last few weeks and in my desperation I took 500mcg of Jarrow MB12 last Saturday (14 July) and 750mcg on Sunday (15 July). On the following Monday my Labrynthitis seemed to dissapear. But for the next 4 days I felt sick to my stomach with massive anxiety, insomnia and a little dizziness, since then I still have the anxiety, insomnia and a little dizziness today, and it has been around 9 days now since I first took the MB12. I've been eating bananas and raisins regularly to keep my potassium up. I've recently been taking TMG, and this seems to be helping a little. Has anyone experienced similar, and is there anything I can try to get back to normal?! I had my B12 tested last Wednesday and it came back as 333. Thanks in advance.